1984 Mercedes Benz 190e Repair Question
Professional cylinder head rebuild...190e now runs rough with no power. . .leaving fluffy black deposits on all plugs and in exhaust.
Check the fuel pressure if its within specs-start here
1.Excessive fuel pressure can be cause by restricted fuel return line
2.Defective Oxygen Sensors.
3.Leaking injectors and fuel pressure regulator.
4.Coolant temperature sensor out of calibration.
5.Restricted air intake system.
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Thank you, Rasmataz, for your list of helpful suggestions. #4 led me to check my sensor hookups and I found I had inadvertently switched two similar connections for the fuel sensor and the coolant temperature sensor. I completely overlooked this until your comment made something click and I checked my before photos again (more closely.) My 190e is now running smoothly, with thanks to you. The moral of the story is to always take photos and tag everything. . . check and double check. . .then triple check. Three times was the charm. Thanks again for pointing me in the right direction. Your guidance was most appreciated; my confidence restored!
1 question asked